What is precession?
What will be an ideal response?
The slow twist of the rotation axis.
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The ram of a pile driver drops onto the top of an iron beam, driving it partway into the ground. The distance that the beam sinks into the ground depends on the
A) initial height of the ram. B) initial potential energy of the ram. C) kinetic energy of the ram when it first hits the beam. D) all of the above
For a nova to occur, the system must have already been a(n):
A) astrometric binary. B) detached binary. C) spectroscopic binary. D) mass-transfer binary. E) eclipsing binary.
Henri Becquerel
A) discovered radium and polonium. B) discovered radioactivity. C) observed back-scattering from nuclei. D) invented the particle detector tube. E) proposed the tiny central nucleus idea.
A batter hits a 0.140-kg baseball that was approaching him at 30.0 m/s and, as a result, the ball leaves the bat at 40.0 m/s in the direction of the pitcher. The ball remains in contact with the bat for 2.0 ms
What is the average force exerted by the bat?